Die-casting apparatus



March Z9 1927.

A E. HOTTER om CASTING APPARATUS j 057-1 fo r.' Z'f/rdard Rmx;

March 2 V 1927.

9 E. HOTTER nu: CASTINGAPPARATUS .24, 1924 5 sheets-sheet a March 29,1927.

, E. HOTTER DIE CASTING APPARATUS Filed Nov. 24, 1924 5- Sheets-Sheet 3 E. HOTTER DIE CASTING APPARATUS March 29 192.7.

` 5 Sheets-Sheet 4.

m l N Filed Nov, 24, 1924 March 29 v1927. E. HOTTER DIE CASTING APPARATUS Filed Nov. 24. 1924 5 Sheets-Sheet 5 71 if??? for; Echt/arc( 220 tier,

Patented Maa 29, .1927.

UNITED STATES 1,622,788 PATENT. orner..

EDWARD norman, or crncaeo, rumors.

DIE-CASTING APPARATUS. v

aplicasion inea number 24, 1924.. serial No. 751,779.

y This invention relates to die casting' apparatus and has for its objects thematters v hereinafter described and claimed.

In the accompanying drawings--v Fig. 1 1s a side v1ew of a die casting apparatus constructed in vaccordance with my y shown in Fig. 5, with all parts above the die bed omitted for the sake of illustration.

In the drawings, 1 indicates a pot containing molten metal and set in a fire-box 2,

as lusualin devices of this general character. 'Upright standards 3, 4 are at the forward and rear ends, respectively, of the fire-box 2.

Two horizontal rods 5, 5 extend between the,

upper, ends of'tbese standards and are supported thereby, there being a rod, at each side of the apparatus, as shown in Fig'. 3.

A container 6, in the` form of the customary goose-neck, operates in the ot 1 to pick charges of molten metal and' discharge the same'under. pressure into ,the die 7 located forward Vof the standards 3, 3, as shown in Figs. 1 and, 3,. As shown in Fig. 4, upright :ums 8, 8 'are'on opposite sides ofthe firebox 2 and have their lower ends, fulcrumed 4 by pivot pins 9, 9, in the slot heads of ver tically ad]ustable screws 10, 10. The upper ends of the arms8, 8 extend inward toward each other over'the fire-box 2, and h we their inner ends 11,11 extendingdownward toward the pot 1, as shown in Fig. 4. These arm ends 11, -11 carry-'a' horizontal cross pin l2, extending through a boss 13 on' the pivotally' supported by ,the arms.

l The container has adischarge' nozzle .14 at its forward end to enter the inlet opening 15 of the'die 7, as shown in Fig. 1,'the nozzle passing through an enlarged opening 16 in t By the screws 1o, 10,; 1175 arms a may be in Fig. 1. container 6. The pin' 12 is preferably fitted tight -in this boss and its ends are rotatable.'

in the arm ends 11, soi'tha't the container is e`uprght plate 17 secured to the stand- 'ards' 3.

given vertical adjustment to raise and lower the container to adjust its nozzle 14 for proper registration with the inlet opening of the die. Said screws 10, as shown in Fig. 4, pass through slides 18,'one for each screw and carried on the: outside of the firebox 2. .The slides- 18, 18 have grooves to receive horizontal ribs 19, 19 on the outside of the .box' 2 for horizontal adjustment' of the container. To make this adjustment,

the slides 18 .carry end -lugs 20, 20 and in y which are tapped screws 21, 21 engaging the ribs, as shown. This adjustment allows for. taking up wear on the nozzle and also to make the nozzle properly fit its inlet openmg.

Arranged between the -rods 5, 5 adjacent their rea-r ends is a crank shaft 22, having its ends journaled in boxes- 23, 23 on the rods 5, 5, as'shown in Figs. 3 and 4.' These- `rods at the boxes are threaded to receive clamp nuts 24, 24 for holdingt-he boxes on the rods andA providing endwise adjustment `thereof when required. Fixed to the crankshaft 22 is a spur gear 25 in mesh with a segmental gear 26 fixed to a short shaft 27 journaled in the box 23 at the gear 25, as

shown in Figs.l 1 andl3. The hub of the gear 26 is provided with a boss carrying an operating member or rod 28 having a handle at its outer end (Fig. y3) for turning the'gear.Y

The container 6 carries a box 29 at its rear end. Said box is open to receive the forwardend of 'a -link 30 pivoted in the box `on a horizontal pin 31,'as` shown in Figs. 3

andn6. Said link'30 carries at its rear end a cross pin 32, on the ends of which are rollers 33, 33 ltraveling, in cam' grooves 34, 34 in the uprights 4, 4 at the rear of the device.' These grooves are in the inner faces ofl the uprights and have vertically straight lower ends with the joining portions inclined upwardly and rearwardly, as shown A yoke link 30 andis pivoted'thereto adiacent its `rear end by a horizontalpin 36. Said yoke. l

35 is'coupled'- to the crank portion of the shaft 22fby a connecting rod,37. Said rod 35 (Fi-gs. 1 and 4) straddlesithe 37 is screw-threaded and carries'nu'ts 38, 38 on the opposite side of the yoke for mh'ustlment purposes.

shown by full lines' in Fig.' 1, thel container 6 has its nozzle 14 in the inletfqpening 15 When the parts occupy the' positionsl of the die, so. that the charge of moltcn. metal in the container may be forced by Aof the grooves 34 and hold the link against.

` grooves 34. The lower inclined portions of' these grooves meet thel verticalloweriends` rearward movement. Thus, the container is' held locked in discharging positionwith its nozzle fitting tight in the inlet` opening of;

the die to avoid leakage and againstany vmovement under the pressure of discharging the metal into-the die.

After` charging the die, the rod 28 is raised, and by the gears 25, 2 6 theicrank shaft 22 in turning upwardlifts the rear end of the link 30 land withdraws the nozzle 14 from the inlet opening of the die as the rollers 33 startl up the 'inclined portions of the cam of said ooves just above the aligned horizontal dlametersof-the rollers 33 and pins 11, 31, and 36 whenth'e link is horizontal as indicated by the line a in Figs. 1 and v5. This is what locks the linkagainst endwise -movement when the container 6 is dischar'g'- As soon as raised b the crank 22, the rollers start up the incline portionsy of the groove 34 andby the' arms 8, 8-swing the 'contalner 6 backward .to withdraw the nozzle from the inleto ningof the die and free of the plate 17. e continued fupward travel of the rollersswings the arms SrearWard as shown in dotted lines in Fig. 1,and tilts the forward end of the .container into the pot 1 for submerlg'i'ng the nozzle 14l in the molten metal for" refi ing the container by gravity through the nozzle, as indicated by dotted lin'es in Fig.

1. Moving the rod' 28 downward lowers the crank portion of the'shaft 22 and swings the.

l container 6 out ofthe pot .1 onI the rods 8, 8.

As the rollers 33 travel down Vthe cam grooves 34, the arms 8, 8 are-swung forward to their `vertical positionsto move the nozzle 14 d1. rectlyinto the inlet o jning 15 ofnthe die for filling the same wit anothercharge. .f

As shown in F ig...1, a set-screw 39'carried -by an inwardlyeXtendinglugO onthe box.

atthe gears 25,. 26 is? arranged in front 'of the trank portion of Itheshaft 22 and prevents itsfbemgswung beyond center ,or lock-v ing position shown in Fig.1. This set-screw '-60,1 can be adjusted'to 1`stop-'the action-ofthe shaft when the nozzle 14'comesinto proper re 'ster with the iletbpening 1 ment on the fire'be'ii'2gso that theymay be slide and carrying the 6. To accomplish this, said uprights f 4, 4 have horizontal base flanges 41, 41 resting on top of the pot and bars 42, 42 carried by the upright side walls of the fore box 2 along their upper ed es, as shown in Fig. 4. T-slots 43, 43 are in t esebars to receive the heads of holding screwsl 44, 44 carried by the base flanges 41 and clamped thereto by nuts, as shownin Fig. 4. l

To provide for accurate horizontal adjustment of the uprights 4, 4, I provide horizontal screws 45, 45 above the bars 42, 42 'and extendingthrough upright lugs 46,. 46 on said bars in advance of the members 4, 4, as shown in Figs. 1 and 5. These scews engage upright lugs 47, 47 on the base anges 41, as shown. Toallow for this horizontal adjustment of the member 4, 4, the rods, 5 Where they extend throughv the upper ends f said members are threaded and receive adjusting nuts 48,48, asshown. The 7rear vend of the link 3 0 may be ad- )usted laterally to line up the'l nozzle of the container 6 for proper register with the inlet opening of -the die 7 lThis is accomplished by making the rear of said link bifurcated to receive an adjusting Jnut -49 on the threaded mid-portion of the cross pin 32, as

shown in'Figs. 3 and 6. Y

The link 30 at-its forward end.carries on opposite sides vertically arranged set-screws 50, 50, which worka amst the bottom of the box V29 (Fig. 5). l djustingthese screws raises or lowers, as the case may be, the extremef rear end of the link 30 and the nozzle end of the container' about the pivot pin 11 vto bringthe cross pin 32 and the nozzle end of the container 6 in ali ment when the parts are inthe positions sbwn in Fig. 1. vhis 'allows for proper horizontal line adjustment when fitting another container or replacing a nozzle.

Figs. l1 and 3, I. have shown my die casting apparatus .used with a center gate machine. In this type, the die 7 is upright and has its inlet opening 15 in the rear side of the die. This die has two mold members '-7, .7", the former being fixed to the late 17 and the latter being carried byasli e 51 on horizontal rods., 52 52,":- garraned in upper and lower pairs, as slijwn in `igs. 1 and 3.

.Any suitable form ofmechanism, power or' otherwise, maybe employed for moving the ie member 7b into and -out of engagement with its co-operating die member 7*. The power cylinder` and its linkage of my copending application Serial No., 671,287,1i1ed October 29, 1923, may be employed for the-purpose. .3

The die' members'7f,'.7b when closed provide a mold.. cavi'tybetWeen them, as shown. To eject the casting out of the die when thel die .members are-separated, I provide in the slide 51 a pair of vertically arranged shaits 53, *53, 'These shafts pass through lUO lll)

.and are fixed to a fixture l54 by set screws 55, l55. This fixture 54, as shown in Figs. 1 to 3 and 5, carries a rack bar 56- givenendwise movement by a toothed portion forming av pinion 57 on a lshaft 58 extendingl to one lside of tlie slide 51 and there provided with a handle 59, as shown in Fig. 1.

' The inner end of the rack bar 56 carries a yoke 60 fitting in a Tslotin the adjacent end of a bar or'member 61 extending through the slide 51 with one end threaded into a push olf plate 62 carrying a plurality of pins 63, which operate against the casting 64 to eject it from the mold cavity when the die is open, as shown'inl Fig. 3. The'push-oi plate. 62

'works ina chamber in a' box 65 carried by the slide 51 ybehind the 'diemember 7". As shown in Figs. 1 and 3, the.' ins 63slide in this die member. By the yo e 6 0, the rack bai` 56 has detachable connection with vthe member61, thus permittin different dies to be connected with the rac bar on changing dies of the machine..A v

In Figs. 5' andy 6, Ifhave shown my' appal ratus applied to a horizontall arranged slide Y gate machine, wherein the ie 66 withA its separable mold members 66, 66" are horizontal. The die niembef is mounted on a bed plate 67 clamped on upright rods 168,

' 68. The die lmember'66. -is carried onthe under side of a 'slide 69, alsof on said rods and vmovable-'thereon to open and close the die, the saine as the machine of Figs. 1 to 4.

. The movable die member 6.6i may also be 'provided with a easting'ejector, as heretofore described. At the nozzle 14 of the container 6,l the die 66.has an inlet opening 70 i in its side.

v In Fig. 5, the fire box2 has lfront lugs 71, 71 for thev adjacent rods 68 in order to tie the apparatus to the die carrying art` of the machine. In Fig. 1, the plate 1 is secured to the uprights 3, 3, and is also supported on a ledge 72 on the fire box 2. The

rods 51 are supported at one end by.this`V plate 17, as shown, to couple the casting ma` chine with the lire box, 2. Except forA the changes described, the devices of Figs. leto, 4 and 5 to 6 operatethe same, and like parts' arevindicated by thegsame reference charac.'- ters.

. tion with the link. 30. provide a cam action on the rear ofthe container 6 in swinging it into an'd out of en vgement with thedie and into and out o llilling position in the L pot 1. 'This cani action provides an accurate 'and positive operation of the apparatus and also allows for' the automatic locking on swinging the container into engagement with the-die.

By the gears. 25 and 26, the speed .of the apparatusfin actuating the container is increased, overt-he t pes of devices heretofore mad'etandused. his' gear arrangement rev- .The rollers 33 --and grooves 34 in conjunci-v quires onl one'handle or operating'memf f Aber Y:for t e device, thus simplifying the mechanism and increasing its output, over the multiple-handle machines as now. used. Thus with my invention labor costs are reduced by requiring only one operator for each machine instead of a plurality of opl erators per machine as heretofore.

With the gear drive, theA travel of the container 6 is'much faster than in machines now used. This stirs up the molten metal in the pot 1 to keep the mixture uniform.

Due to this gear drive requiring only one handle, the apparatus is made easier to operate and moreover provides a -minimum amount of travel for the operating member 28 for the full Vmovement ofthe container 6.

The'details of constructiono and-arrange ments of parts shown. and described may be variously chan ed and modified without de- SOv parting from t e spirit and scope of my inv vention.

I claim asmy invention: l V 1. In a die casting apparatus, the-combina? tion with a pot and a die having an inlet opening, of a pivotally supported container having a nozzle,V and means having a cam action on the container for moving its nozzle end into and out of the inlet opening of the at its forward end, and means' to the rear o f the container having a cam-action on its rear end for moving its nozzle end in to and out lof the inlet opening of the die and or submerging the nozzle end of the container inthe moltenmetalin the pot for charging' the container, said means automatically establishing a horizontal line lock to the -rear of the container for holdin the same enga 'with' the die on the container reach ing charging sition. Y

V3. In a die-casting apparatus, the combinal ,tion with a pot and a die having an inlet opening, of'a pivotally. supported container end into and out of` said inlet o enmgand for submerging the nozzle end o the container in .the molten metal inthe pot tor-charging," the container, said. means having a` single operating member connected therewith by' `meshin -gearslto increase the speed of actuation o the container. 4. In a die casting apparatus, the

combina- -hav'ing a nozzle, and means having a cam Y action on the container for moving its nozzle tion with a pot and a die havingjan inlet lock the container in said positlon.

'-opening, of a pivotally sup orted container having a nozzle, and means aving a cam action .on the container for moving its nozzle endinto and out of sald inlet openlng and for `submerging the nozzle end of the consaid crank andflink being moved'into posi-.

tion' at.. right-angles-to each other on the container reaching discharging positionl to 6. In a die casting apparatus, the com -bination with a pot, of a pivotally spported container therein, an' vupwardly and rearwardly inclined guide on the snpport to the rear of said container, a link pivoted to the container and vextending rearwardly therefrom and engaging'said guide, and Imeans for raising and lowering the rear end of the link.

7.. In a 'die 'castingv apparatus, the combination with a po t of pivotally supported arms extending above the pot, a container pivotally carried=by said arms, and means -having a cam action on the containerl for swinging it with said arms and about the pivotal connection-therewith. y v

8. In a die casting apparatus, thelcombination' with a support and a pot, of-` upwardly extending arms on opposite sides of thepot and Afulcrumed at their lower ends on the support, a container between the arms and pivotally carried thereby in said pot,

and means having a cam action on the rear end of the container forlmovlng'the same with said arms and about the Vpivotal con, nection therewith..

9.l In a die casting apparatus, the.. com bination with asupport and a pot',ofup wardly extending arms on o posite sides of the pot and fulcrumed at thelr lower ends onv the support, a container between ,the arms -and pivotally carried thereby in said- .pot,` v`means on the support to the rear of thepot `and having upwardl yand rearwardly' 1nclined grooves there1n, .a link pivotedA to thecontain'er and extending 5 rearwardly therefromand working in said grooves, andA means for raising and-lowering .the rear end of said link.

v10:111 a die casting apparatus,l the combinationwith aY support and a pot, of upwardly arrnson'opposite sides of the pot and fulcrumed at their lower ends on the support, a container between the arms and pivotally carried thereby in said pot, spaced uprights on the support to the rear of the pot and having upwardly and rearwardly inclined grooves. therein, a link .pivoted to the container and extending rearward therefrom andhaving rollers in said grooves, and a crank shaft above the link and connected `therewith for raising and lowering said link.

11. In a die casting apparatus, the combination with a support and' a ot, of a container in the pot and ulcrume on the support, means to the rear of the pot and having upwardly and rearwardly extending vin- .clined grooves with the lower ends of the grooves vertically straight, a link pivoted to the container and extending rearward therefrom and having rollers in said grooves, and a crank shaft above the link. and connected therewith- `:for raising and lowering its rear end, said crank shaft being on center when the rollers are in the lower ends of the grooves for holdingthe container in discharging position.

-12.` In a die casting machine, the combination with` a pot, of a pivotally supported container 'working in the pot, cam means to the rear of the lcontainer and includinga link pivoted to the container and "extending lrearwardly therefromil and means for adjusting the link and t el container for horizontal ali ment thereof when ,the container reaches discharging position,

' 13, In a'diefcasting apparatus, the combination' with a support. and a pot thereon,

of upwardlyA extending. arms on^ opposite sides of the pot and having theirlower ends fulcrumedon' the support by means permitting horizontal and vertical'adjustment of said arms, a container between the upper ends of the arms and pivotall carried thereby` in said pot, and means or moving the container with vthe arms and yabout the pivotalgconnection therewith.

' 14., In a' die casting apparatus, the combination with a support and a pot thereon, of a containerworking in the pot and fulcrume'd on the su port, an upwardly and. rearwardlyinclineg guide on said support, a slotted box carried at the rear of the con- ,jztainer,a link extending into said box and having pivotal connection therewith with 'the -rear'end of the link engaging said guide,

adjustment screws carried by the link and engaging the bottom of the box for aligning the link horizontally with the forward' `end of the container, and means for raising andlowerin the rear end of the link.4

15. lIn a ie casting apparatus, the coln'-,l bination with a su port and a pot thereon, of va-container wor 'ng in .the pot and fulcrumed on the support, a'pairof opposed uprightson the support to the reap of the lacarrea l.pot and having4 u Vwardly extending and rearwardly incline grooves, a link pivoted to the. container and extending rearwardly.

16. In a die casting apparatus,

of a container working in the pot and fulcrumed on the support, a pair of opposed uprights onthe support to the rear of the pot and having inwardly opening grooves extending upwardly and inclined rearwardly, a link pivoted to the cont-ainer and ex# tending rearward therefrom with its rear end between the uprights, a cross pin carried bythe link at its rear endvand .having rollers in said grooves, a nut threaded on said pin and engaging the link for lateral,-

adjustment thereo and means for 'raising and lowerin the rear end of the link.

17. Ina ie'casting apparatus, the combination with a pivotally supported charge carrying container, of means having a cam action on the 'container for. moving the on.

tainer into and out of discharging position,

x said means, automatically establishing a positive horizontal line lock for holding the container in discharging position on the con tainer reaching the saine.

18. In a die casting apparatus, the com.- bination with Aa pivotally supported charge carrying container having a discharge noz-V zle at`its front end, of means having action on the rear end of the container for moving the container into and out of discharging position, said means including 'an operating link pivotally connected to the rear o f the container; thel link, its pivotal connection with the container, and the nozzle all being brought into horizontal alignment on the container reaching discharging position for holding the same therein.

. 19. In a die casting apparatus', the com-- bination with a support, of a charge carrying container pivotally mounted thereon and having a discharge nozzle at its forward end` means on the support to the rear of the container/and having an upwardlyl and rear-4 `wardly inclinedguide with a vertically straight portion at its lower end, and a link pivoted` at one end to the rear end of the container and having its otherv'end ccf-'op-l erating with said guide in the'movement position the link, lits vpivotal connection with the container, the, vertically straight lower end of the guide, and the nozzle all the combination with a support and a pot thereon,

being brought into horizontal alignment on 'the container reaching discharging' position for holding the same therein.

20.' In a die casting apparatus, the coinbination' with a pivotally supported charge carrying container, of means having a cam' action on the container` and including a link pivoted to the container for moving the saine into and out of discharging position, said link being brought into a horizontal position 'and held from vertical as well as endwise movement 'on the container reaching discharging position.

21. In a die casting apparatus, the coinbination with a pivotally supported charge carrying container, of means including a' connected' link and crank for moving the container' into and out of discharging position, said link and crank assuming positions at right-anales to each other on the container reac ing discharging position for holding the lcontainer therein.

2,2. In a die casting apparatus, the com bination with a pot, of a charge carrying container disposed in said pot, and a pair of upwardlyextending pivotally supported arms on opposite {sides of Ithe container and having pivotal connection therewith for supporting the container in the pot, `said arms allowing the container to' be swung rearward out of discharging position and at the Sametime be dipped into the pot for charging.

23. In a die ,casting apparatus, the com bination with a support, of a pot associated therewith, a charge carrying container 'disposed in said pot, and a pair of` arms outside the pot and on opposite sidesh of the same, said arms having their lower ends pivoted to the support' and having their upper endsl extending above the pot and pivoted4 to the container for supporting the saine' in said pot, said arms allowing the container to be swungv rearward and d0wnward from discharging position and at the saine time be dipped into the pot for cli'arging. v

24. In a die casting apparatus, the combi# nation'with a support, of a charge carrying container associated therewith, a pair of arms on opposite sides of the container and vhaving pivotal connection therewith for su a givotal connection between the arms and support 'and enabling vertical vand lateral `adjustment to be-gi'ven to tlie arms. of tliecontainer into andout of discharging In'testimony'that I claim the foregoing, as my invention, I aiiix my signature, this 18th dayof November. 1924.r v

' EDWARD HOTTER.

portingv the same, and means providing 

